# SDR DALA2026091005069

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2026
- Submitted: September 10, 2026
- Operation: Air carrier
- Aircraft: [N804NW](https://openairdocs.org/aircraft/N804NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0549
- Aircraft time: 99,764 hours, 13,110 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Zone 800
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026091005069

## Discrepancy

CABIN PRESSURE IND (103MJ)/PSCU(5MJ).   REPLACED PSCU PER A330 AMM 52-71. (1801891) AIRCRAFT WAS GROUNDED.

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